3.5 RDA analysis
The DCA of the insect pollinator community projected a gradient length
of 2.4 indicating RDA was the appropriate ordination method.
Environmental factors; Elevation and flower resource abundance was found
to be the significantly associated environmental factor for the
pollinators (ANOVA, p < 0.05) (Table 4) The relation of the
top 15 most abundant pollinators 9 five from each group) with these
significant environmental variables are shown in RDA (Figure 5). Two
canonical axes of RDA analysis explained the variance by 12.828 % in
the pollinator–environmental interaction where the first axis and
second axis accounted for 2.118 % and 10.71% of the variance
respectively. Managed habitat types represented the higher abundance of
flowers associated with the high number of Apis cerana andApis mellifera . On the other hand, Pieris canidia was
found associated with both open trail and grassland and Vanessa
cardui in a managed habitat. Bombus eximius , Bombus
flavescens , Eristalis tenax , and Ypthima baldus were more
associated with the forest trail which was relatively humid area.
Likewise, Melanostoma univittatum and Episyrphus
viridaureus were associated with the open trail whereasEpisyrphus balteatus was close to grassland and managed habitat.